Solar Cookers

Solar Cookers

Jewish families celebrate Passover to commemorate the freedom and exodus of the Israelites (Jewish slaves) from Egypt during the reign of the Pharaoh Ramses II. When the Pharaoh Ramses II freed the Israelites, they fled so quickly that there wasn't time to bake their breads. Instead the Israelites packed the raw dough, which they quickly baked in the hot sun into hard crackers called Matzohs as they fled through the desert. The exodus of the Israelites took place over 3000 years ago, but the Israelites were not the first to harness solar power for cooking, neither were they the last. Solar cooking has had a long rich history and has important implication for the future. Solar cooking is an important link in understanding the sun’s power, is a sink of innovation and technology, is widely applicable around the world, has social, economic and ecological benefits, and is the answer to some of the world’s biggest natural resource shortages. Although, solar cooking is an industry that has yet to be revolutionized into an efficient home appliance, therefore, there are many avenues for innovation and technological advancement to be explored.

Horace de Saussure coincidently created the first solar box cooker, although, because cooking food was not his objective he failed to revolutionize the solar cooking as an efficient home appliance. Horace de Saussure, “set out to determine how effectively glass heat traps could collect the energy of the sun.” Horace de Saussure placed five consecutively smaller open bottomed glass boxes within each other on a black table, in which he placed a piece of fruit. When this miniature five walled green house was exposed to the sun, each consecutive glass chamber trapped warm air and thermal radiation, which are by products of light energy being turned into heat. Consequently the innermost glass box became the hottest, a recorded 189.5 degrees Fahrenheit and Horace de Saussure successfully cooked fruit within this box. Cooking was only an experiment used by Horace de Saussure to understand his greater goal, which was how effectively glass heat traps could collect the energy of the sun. Although, Horace de Saussure realized the practical application of his heat trap. Horace de Saussure stated, “someday some usefulness might be drawn from this device . . . [for it] is actually quite small, inexpensive, [and] easy to make.” Horace de Saussure was correct in stating that solar cooking is useful, but contrary to his advice the solar cooker failed to be revolutionized into an efficient home appliance.